linux-kernel - [tip:x86/boot] x86/xen: Use X86_SUBARCH

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Date:	Fri, 22 Apr 2016 02:49:29 -0700
From:	"tip-bot for Luis R. Rodriguez" <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	brgerst@...il.com, peterz@...radead.org, luto@...capital.net,
	mingo@...nel.org, bp@...en8.de, hpa@...or.com, mcgrof@...nel.org,
	torvalds@...ux-foundation.org, dvlasenk@...hat.com,
	tglx@...utronix.de, linux-kernel@...r.kernel.org,
	david.vrabel@...rix.com
Subject: [tip:x86/boot] x86/xen: Use X86_SUBARCH_XEN for PV guest boots

Commit-ID:  ea1794812410e92c537c839bedeb2d2b2f87c80d
Gitweb:     http://git.kernel.org/tip/ea1794812410e92c537c839bedeb2d2b2f87c80d
Author:     Luis R. Rodriguez <mcgrof@...nel.org>
AuthorDate: Wed, 13 Apr 2016 17:04:32 -0700
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Fri, 22 Apr 2016 10:28:59 +0200

x86/xen: Use X86_SUBARCH_XEN for PV guest boots

The use of subarch should have no current effect on Xen
PV guests, as such this should have no current functional
effects.

Signed-off-by: Luis R. Rodriguez <mcgrof@...nel.org>
Reviewed-by: David Vrabel <david.vrabel@...rix.com>
Cc: Andy Lutomirski <luto@...capital.net>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Brian Gerst <brgerst@...il.com>
Cc: Denys Vlasenko <dvlasenk@...hat.com>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: andrew.cooper3@...rix.com
Cc: andriy.shevchenko@...ux.intel.com
Cc: bigeasy@...utronix.de
Cc: boris.ostrovsky@...cle.com
Cc: ffainelli@...ebox.fr
Cc: george.dunlap@...rix.com
Cc: glin@...e.com
Cc: jgross@...e.com
Cc: jlee@...e.com
Cc: josh@...htriplett.org
Cc: julien.grall@...aro.org
Cc: konrad.wilk@...cle.com
Cc: kozerkov@...allels.com
Cc: lenb@...nel.org
Cc: lguest@...ts.ozlabs.org
Cc: linux-acpi@...r.kernel.org
Cc: lv.zheng@...el.com
Cc: matt@...eblueprint.co.uk
Cc: mbizon@...ebox.fr
Cc: rjw@...ysocki.net
Cc: robert.moore@...el.com
Cc: rusty@...tcorp.com.au
Cc: tiwai@...e.de
Cc: toshi.kani@...com
Cc: xen-devel@...ts.xensource.com
Link: http://lkml.kernel.org/r/1460592286-300-3-git-send-email-mcgrof@kernel.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/xen/enlighten.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 880862c..61f4d9f 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1670,6 +1670,7 @@ asmlinkage __visible void __init xen_start_kernel(void)
 	boot_params.hdr.ramdisk_image = initrd_start;
 	boot_params.hdr.ramdisk_size = xen_start_info->mod_len;
 	boot_params.hdr.cmd_line_ptr = __pa(xen_start_info->cmd_line);
+	boot_params.hdr.hardware_subarch = X86_SUBARCH_XEN;
 
 	if (!xen_initial_domain()) {
 		add_preferred_console("xenboot", 0, NULL);